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Synthesis 2005(19): 3335-3345
DOI: 10.1055/s-2005-918443
DOI: 10.1055/s-2005-918443
PAPER
© Georg Thieme Verlag Stuttgart · New York
Palladium-Catalyzed Ring Opening of Isoprene Monoxide with Nitrogen Nucleophiles - Asymmetric Synthesis of Branched Amino Sugars
Further Information
Received
24 May 2005
Publication Date:
25 October 2005 (online)
Publication History
Publication Date:
25 October 2005 (online)
Abstract
The Pd-catalyzed regio- and enantioselective ring opening of isoprene monoxide with primary amines as pronucleophiles is developed with good yield and enantioselectivity, constructing a quaternary stereocenter enantioselectively. This methodology was used as the chirality inducing key step in the asymmetric synthesis of vancosamine derivative 19. The synthesis was achieved in 9 total steps and 28.6% overall yield.
Key words
palladium catalysis - enantioselectivity - quaternary stereocenter - asymmetric synthesis - amino sugar
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